当前系统Centos6.9，已经安装好lnmp（php5.6 mysql5.1）军哥环境，在此基础上并存一个php5.2的版本。
PS：php5.2.14默认不支持php-fpm的，需要打上fpm补丁
安装epel源
yum -y install epel-release
安装所需依赖
yum -y install openldap-devel openldap net-snmp net-snmp-devel libpng libpng-devel mhash-devel libtool-ltdl-devel gcc gcc-c++ libxml2 libxml2-devel openssl-devel openssl curl-devel curl libjpeg libjpeg-devel freetype freetype-demos freetype-devel php-ldap php-xmlrpc zlib zlib-devel php-soap autoconf
编译libiconv1.13.1
cd /usr/src
wget http://down.whsir.com/downloads/libiconv-1.13.1.tar.gz
tar zxf libiconv-1.13.1.tar.gz
cd /usr/src/libiconv-1.13.1
./configure --prefix=/usr/local
make -j 8
make install
编译libmcrypt
cd /usr/src
wget http://down.whsir.com/downloads/libmcrypt-2.5.8.tar.gz
tar zxf libmcrypt-2.5.8.tar.gz
cd libmcrypt-2.5.8
./configure
make -j 8
make install
/sbin/ldconfig
编译libltdl库
cd /usr/src/libmcrypt-2.5.8/libltdl/
./configure --enable-ltdl-install
make -j 8
make install
编译mhash
cd /usr/src/
wget http://down.whsir.com/downloads/mhash-0.9.9.9.tar.gz
tar zxf mhash-0.9.9.9.tar.gz
cd mhash-0.9.9.9
./configure
make -j 8
make install
需要做一些软链
cp -frp /usr/lib64/libldap* /usr/lib/
ln -sv /usr/lib64/libjpeg.so /usr/lib/libjpeg.so
ln -sv /usr/lib64/libpng.so /usr/lib/libpng.so
ln -sv /usr/local/lib/libmcrypt.la /usr/lib/libmcrypt.la
ln -sv /usr/local/lib/libmcrypt.so /usr/lib/libmcrypt.so
ln -sv /usr/local/lib/libmcrypt.so.4 /usr/lib/libmcrypt.so.4
ln -sv /usr/local/lib/libmcrypt.so.4.4.8 /usr/lib/libmcrypt.so.4.4.8
ln -sv /usr/local/lib/libmhash.a /usr/lib/libmhash.a
ln -sv /usr/local/lib/libmhash.la /usr/lib/libmhash.la
ln -sv /usr/local/lib/libmhash.so /usr/lib/libmhash.so
ln -sv /usr/local/lib/libmhash.so.2 /usr/lib/libmhash.so.2
ln -sv /usr/local/lib/libmhash.so.2.0.1 /usr/lib/libmhash.so.2.0.1
ln -sv /usr/local/bin/libmcrypt-config /usr/bin/libmcrypt-config
至此所需的一些依赖和包已经编译好了，接下来开始编译php5.2并打上php-fpm补丁
下载php5.2和php-fpm补丁
cd /usr/src/
wget http://down.whsir.com/downloads/php-5.2.14.tar.gz
wget http://down.whsir.com/downloads/php-5.2.14-fpm-0.5.14.diff.gz
tar zxf php-5.2.14.tar.gz
打上php-fpm的补丁
gzip -cd php-5.2.14-fpm-0.5.14.diff.gz | patch -d php-5.2.14 -p1
编译php-5.2.14，因为当前php5.6的路径是在/usr/local/php下，所以避免和当前php冲突，我这里编译到了/usr/local/php52下
cd php-5.2.14
./configure --prefix=/usr/local/php52 --with-config-file-path=/usr/local/php52/etc --enable-fpm --with-mysql=/usr/local/mysql --with-iconv-dir=/usr/local/libiconv --with-mysqli=/usr/local/mysql/bin/mysql_config --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-discard-path --enable-safe-mode --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --with-curlwrappers --enable-mbregex --enable-fastcgi --enable-force-cgi-redirect --enable-mbstring --with-mcrypt --with-gd --enable-gd-native-ttf --with-ttf --enable-gd-jis-conv --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-ldap --with-ldap-sasl --with-xmlrpc --enable-zip --enable-soap --without-pear --enable-ftp --with-snmp
make ZEND_EXTRA_LIBS='-liconv' -j 8
make install
配置php.ini和php-fpm启动程序
cp php.ini-recommended /usr/local/php52/etc/php.ini
cp /usr/local/php52/sbin/php-fpm /etc/init.d/php52-fpm
chmod +x /etc/init.d/php52-fpm
修改php-fpm需要注意下面几处配置
vi /usr/local/php52/etc/php-fpm
<value name="listen_address">/tmp/php52-cgi.sock</value>
这里改成/tmp/php52-cgi.sock
<value name="user">nobody</value>
<value name="group">nobody</value>
表示php的fastcgi进程以什么用户以及用户组来运行，默认该行是注释掉的，需要打开
<value name="display_errors">0</value>
是否显示php错误信息
<value name="max_children">5</value>
最大的子进程数目
修改php.ini文件，修改几项参数
vi /usr/local/php52/etc/php.ini
post_max_size = 50M
upload_max_filesize = 32M
date.timezone = PRC
short_open_tag = On
cgi.fix_pathinfo=0
max_execution_time = 300
启动php5.2
/etc/init.d/php52-fpm start
最后在nginx中配置下php52就可以了
location ~ 1.php(/|$)
{
try_files =404;
fastcgi_pass unix:/tmp/php52-cgi.sock;
fastcgi_index index.php;
include fastcgi.conf;
}
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